15. Calculate the ratio of acceleration of proton
deutron and an alpha particle in a uniform
electric field.
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answer
a=
m
F
=
m
qE
(∵ E is uniform)
∴a
p
:a
D
:a
a
=(
m
p
e
):(
2m
p
e
):(
4m
p
2e
)
⇒a
p
:a
D
:a
a
=1:
2
1
:
2
1
⇒a
p
:a
D
:a
a
=2:1:1
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